For Wisconsin
1. Waukesha County- Traditional deep red Suburban GOP County that is not as diverse or college educated as other suburban counties in the Midwest, Trump won it in 2016/20 in smaller margins, however the local GOP is engaged in culture war issues that is popular.
2/3. Kenosha and Racine Counties- Majority Minority cities (Kenosha, and Racine), 2 universities (UW Parkside/Carthage) that do not see the same turnout or activism scene as UW Madison/Beloit College, more whiter suburban/exurban and rural areas, Both went to Democrats by comfortable margins until 2016, Kenosha/Racine counties got the GOP shift in 2020 due to the unrest.
Kenosha swung to Trump, but Racine swung to Biden.